Electrically-heated tongs



F. 0. BROWN.

ELEcTmcAL-LY HEATED'TONGS.

APPLAICATION FILED OCT. 24,1921.

Patented July 18, 1922..

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EECTRICALLY-HETED TONGS.

Specification of Letters I'atenft,

atented July 18, 1922 appncatim ined october 24, 121. serial No.509,787.

-To all whom it may conca-u:

Be it known that I, F RANK O. BnowN, a citizen of the United States, andresident of the city of St. Louis and State of Missouri, have inventedcertain new and useful Improvements in Electrically- Heated Tongs,of'which the following is a specitica tion containing a full, clear, andexact de scription, reference being had to the accompapiying drawings,fornung a part he1'eof.

.y invention relates to improvements in i tongs, and has' vfor. its

primary object a pair of tongs, the jaws of which are electricallyheated.

A further object is to construct a pair of tongs which areelectricallyheated and in which the heating units can be readily removedfor replacement or repair.

In the drawings,

Fig. 1 is a, si e elevation of my device, showing the tongs in closedosition.

Fig. 2 a similar view witi parts broken away and in section.

Fi 3 an enlarged view of one of the jaws, showing the method ofinserting the heating unit therein.

Fig. 4 an enlarged fragmental section taken on the line 4-4 of Fig. 1.

F ig. 5 a diagrammatic view, showing the wirin connections for theheating units.

In t e construction of m device I employ a pair of jaws 6 and 7. hesejaws are secured to handles 8 and 9. The handle 9 is hollow throu houtthe greater portion of its length, (seeig. 2,) while the handle 8 is`only hollow at its forward portion. The

handles 8 and 9 are rovided with loops 10 to permit the insertion of thefingers for manipulating the jaws 6 and 7. The handles Sand 9 arepivotally connected together by means of a rivet 11, which rivet issurrounded by a sleeve of insulating ma terial 12. The contacting facesof the han dles 8 and 9 are provide with openings 13 and 14 which openinto the channels 15 and 16. Formed in the handles 8 and 9 and in theopenings or channels 15 and 1 6 are located electrical conductors 17 and18. The electrical conductor 17 is interrupted to ermit the insertion ofa switch 19, by means of which the current can be turned on and off.Located in the adjacent forwardl end of the passage ways 16 and 15 is aplug comprising an insulatingr body 20 which is surrounded by a metallicsleeve 21 and in the heating unit 24. This heating unit is adapted to beplaced within the recess or opening 25 formed in the jaws ('and 7, andretain any position l means of the screw-threaded plug 25. will be notedfrom Figs. 2 and 5, that the wire 17 extends into one of the jaws whilethe wire 18 extends into the other jaw, and in order to complete thecircuit, a .wire 26 `is employed. This extends from the jawv 7 throughthe passage 16, then through the openings 13 and 14, and forward againin the passage 15 where it is connected to the plug 20 in the opposite'aw'. This connection is clearly brought out 1n Fig. 5. If founddesirable I may interpose a spring 27 between the arms 8 and 9, so thatthe tongs will be held open, or in other words, the jaws forced apart.This however is not essential, as the tongs may be opened and closed by'the operation of the fingers. My device while preferably used for hairtongs 'can also be used as brazing portion oval; and further, that theforward edges of the jaws are flat. The flat contacting faces areespecially designed to press the hair and remove the kinks from the sameand 'straighten them out; and the outside oval faces arc especiallydesigned for curling the hair, and the front straight edges permit thejaws to come down close to' the scal i for straightening short hair.

avin fully described my invention,

what I c aim is: v

1. An electrically heated tong comprisin r a pair of hollow jaws, hollowhandles forme integral with said jaws, a heating unit lo cated in eachof said jaws, electric conductors located in the hollow handles andconnected-to the heating units, said conductors extending through andout of one of said handles. an electric switch located in one of saidhandles for interrupting the electric current through said conductors,and means for removing said heating units.

2. Anvelectrically heated tong comprising a pairof aws having integrallyformed hollow handles, said jaws having flat contacting faces and convexfaces vformed yopposite said4 flat faces,a heating unitlo'eated-i 'eachjaw, electric conductors extending through said handles, a switchlocated in one of said handles for making 'and breaking the electriccircuit through said conductors, and

means for permitting the removal 'ofsaid heating units.

3. An electricall heated tong comprising a pair of hollow andlespivotally secured together, a jaw secured to oneend of eac-h of saidhandles, an electric heating unitlocated in each jaw, electricconductors extending through said handles for relating the heating unitsto a suitable source of supply, a switch located in one of said handlesfor making and breaking theA electric current passing therethrough, aspring for normally holding said jaws apart, and removable means locatedin each jaw for permit-V -.tingthe removal ofthe heatingunit, withoutdisconnecting the electric conductors.

4.y An electrically heated tong comprising a pair of jaws hav-ing flatcontacting faces and convex faces opposite the flat faces, said flatfaces and convex faces being joined by a vertical face, an electricheatingr unit located in each jaw, a pair of handles pivotally connectedtogether formed integral with said jaws, electric conductors secured tosaid heatin a sing e switch located in one of said l1andles for makingand breaking the circuit passing through the heatingr units, and meansfor permitting` the replacement of the' heating units Withoutdisconnecting the conductors.

In testimony whereof,- I have signed my name to this specification.-

, FRANK 0. BROWN.

units and located in said handles,

